Shake-Proof Hook Fuse Positioning Stability

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Solution Overview

Problem

In power distribution systems, fuses can move unexpectedly during opening, interfering with controlled force application and movement, which is undesirable in applications like underground and pad-mounted systems.

Innovation Solution

A shake-proof hook is designed with a hook end and a coupling end, featuring a retaining portion and coupling rings that securely engage with the fuse, preventing unexpected movement by ensuring controlled force application and stable positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a simple hook is used to open the fuse, then the device complexity is reduced, but the fuse may move unexpectedly during opening, interfering with controlled force application

Engineering Contradiction:
Improvehook structureVSAvoidfuse positioning stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The hook is divided into two distinct ends: a hook end with a receptacle for engaging the fuse, and a coupling end with coupling rings for attaching to opening equipment. This segmentation allows each end to be optimized for its specific function while maintaining overall simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The channel in the branch acts as an intermediary structure that guides and constrains the fuse position during opening, preventing unexpected movement while allowing controlled force application through the hook

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the hook structure is simplified, then ease of manufacture is improved, but the ability to prevent unexpected fuse movement is reduced

Engineering Contradiction:
Improvehook fabricationVSAvoidcontrolled force application
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The hook design incorporates a channel that dynamically adapts to the fuse position during opening, providing guidance and constraint when needed while allowing smooth movement when force is applied. This dynamic behavior is achieved through the geometric configuration rather than complex mechanical components

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The coupling rings extend along an axis different from the retaining portion, creating a three-dimensional configuration that provides stability in multiple directions. This dimensional approach prevents unexpected fuse movement without adding complex mechanical constraints

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the hook allows free movement of the fuse, then ease of operation is improved, but reliability of controlled opening is worsened

Engineering Contradiction:
Improvefuse opening operationVSAvoidopening control
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The channel in the branch preliminarily positions and guides the fuse before the opening force is applied, ensuring proper alignment and preventing unexpected movement. This preliminary action occurs as the fuse is inserted into the receptacle, preparing the system for controlled opening

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10099899B2Shake-proof hook
Publication Date: 2018.10.16 S&C ELECTRIC CO
  • US10099899B2 patent drawing
  • US10099899B2 patent drawing
  • US10099899B2 patent drawing

AI summary

A shake-proof hook is provided, which includes a hook end that defines a receptacle. The hook end includes a lead-in portion and a channel spaced apart from the lead-in portion. The shake-proof hook includes a coupling end coupled to the hook end. The coupling end includes a retaining portion and at least one coupling ring. The retaining portion extends along a first axis transverse to a longitudinal axis of the shake-proof hook and the at least one coupling ring extends along a second axis. The second axis is transverse to the longitudinal axis and the second axis is different than the first axis.